EP0328095B1 - Method of producing a gas burner head from a blank of sheet metal - Google Patents

Method of producing a gas burner head from a blank of sheet metal Download PDF

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Publication number
EP0328095B1
EP0328095B1 EP19890102223 EP89102223A EP0328095B1 EP 0328095 B1 EP0328095 B1 EP 0328095B1 EP 19890102223 EP19890102223 EP 19890102223 EP 89102223 A EP89102223 A EP 89102223A EP 0328095 B1 EP0328095 B1 EP 0328095B1
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EP
European Patent Office
Prior art keywords
burner
sheet metal
longitudinal portions
portions
metal blank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19890102223
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German (de)
French (fr)
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EP0328095A3 (en
EP0328095A2 (en
Inventor
Georg Hein
Werner Hensel
Wolfgang Müller
Heinz Thomas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
N.V. VAILLANT S.A.
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Vaillant Austria GmbH, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd filed Critical Vaillant Austria GmbH
Publication of EP0328095A2 publication Critical patent/EP0328095A2/en
Publication of EP0328095A3 publication Critical patent/EP0328095A3/en
Application granted granted Critical
Publication of EP0328095B1 publication Critical patent/EP0328095B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles

Definitions

  • the invention relates first of all to a method for producing a burner plate that forms the burner plate, delimits an elongated burner chamber with longitudinal side walls and, in a central trough, a bearing for an upper part of a gas burner that has a longitudinal cooling tube from a sheet metal blank.
  • the object of the invention is to provide a method which makes it possible to produce this upper part of the burner with all of its essential components for the design of the burner chamber in a few, easily executable work steps from a single sheet metal blank.
  • a burner upper part can be produced in a comparatively simple and cost-effective manner, which is characterized by a high and easily achievable gas tightness of the burner chamber and by a technically advantageous design of the flame area.
  • outer edge zones of the two inner longitudinal regions, together with adjacent inner edge zones of the two outer longitudinal regions, can point inward toward the center of the width of the burner Be inclined.
  • the front edges of the two inner longitudinal areas can also be deformed into flanges for this purpose.
  • This process step can be coupled very advantageously with the pressing of the two longitudinal side walls of the upper burner part against one another at their desired distance, that is to say with the last process step.
  • the invention also extends to an upper part of a gas burner produced by the method according to the invention.
  • Such an upper part formed from a single sheet metal blank is fitted onto the upper edges of the walls of a gas-air mixture distributor, the two outer longitudinal regions forming the side walls of the upper part and together delimiting a burner chamber, which is at the top by one of the two inner Longitudinal areas formed, with a longitudinal trough for a cooling tube and with this trough extending obliquely upwards on both sides and through which mixture outlet openings are profiled side plates.
  • the method according to the invention enables a gas-tight connection of the end wall parts formed by the extensions of the sheet metal blank arranged on both ends with the front edges of the inner longitudinal regions of the blank forming the burner plate.
  • FIGS. 7 and 8 first show the still flat, undeformed sheet metal blank 1, on the end faces of which two lateral extensions 2 and a central projection 3 each protrude.
  • the extensions 2 later serve to form end walls delimiting the end faces of the burner chamber, the projections 3 and the knobs 4 shown in FIG. 1 serve to hold a cooling tube 5 in a longitudinal trough 7 (FIG. 6).
  • the extensions 2 are bent approximately perpendicular to the plane of the sheet metal blank 1, as shown in FIGS. 1, 9 and 10, and at the same time the two longitudinal edges 6 of the sheet metal blank 1 are bent into a position inclined to its plane.
  • the depression 7 for the cooling tube 5 is formed by pulling, in the same process step also the inner longitudinal regions 8, which later serve as the burner plate and are to be provided with the mixture outlet openings, and which extend on both sides of the depression 7 Oblique position with respect to the outer longitudinal regions 9 are deformed.
  • the third method step involves pre-bending those edge zones 10 of the inner longitudinal regions 8 which directly adjoin the outer longitudinal regions 9. These edge zones 10 are pre-bent with respect to the edge zones 11 of the two outer longitudinal regions 9 into a position which is initially perpendicular to these longitudinal regions 9.
  • the fourth method step comprises raising the two outer longitudinal regions 9, which thereby come to lie in a common horizontal plane, the obtuse angle between the inner longitudinal regions 8 and their edge zones 10 being reduced.
  • the two outer longitudinal regions 9 are bent into a position parallel to one another, but do not yet have their desired distance, but an excessively large distance. Simultaneously with this bending of the outer longitudinal regions 9, the edge zones 11 of these longitudinal regions 9 are folded, to be precise in a width which corresponds to the width of the edge zones 10 of the two inner longitudinal regions 8.
  • the two outer longitudinal regions 9, as the longitudinal side walls of the finished burner chamber 14 are placed on the upper edges of the longitudinal side walls 13 of a mixture distribution chamber 12 and on their desired distance, which corresponds to the width of the burner chamber 14, pressed against each other, the extensions 2 each forming an end wall of the burner chamber 14 and sealing this burner chamber 14 gas-tight.
  • the end wall of the trough 7 for the cooling tube 5 receives a collar 15 formed from the projection 3 of the sheet metal blank 1, which serves as a seal, and the two inner longitudinal regions 8 with the mixture outlet openings each receive a joint which also serves to seal the end walls of the burner chamber 14 the end extensions 2 of the sheet metal blank 1 sealing flange 16.
  • edge zones 10 and 11 of the inner and outer longitudinal regions 8 and 9 are jointly bent inward and form a solid, mutually adjacent shield for the flame region of the burner and a secondary air duct.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

According to a method of producing a gas burner head from a single sheet metal blank (1), firstly given regions (2) on both the end sides of this sheet metal blank (1) are bent to form the end walls of the combustion chamber (14), then, in the centre of the width of the sheet metal blank (1), the trough intended to support a longitudinally running cooling pipe (5) is formed by drawing, then the two inner longitudinal regions (8), which are situated on both sides of this trough (7) and are intended to form the burner plate, are bent into an inclined position in relation to outer longitudinal regions (9), which are intended to form the longitudinal side walls of the burner chamber (14), and finally these two outer longitudinal regions (9) are deformed into a position parallel to one another and pressed towards one another to their desired separation which corresponds to the width of the burner chamber (14). This burner head thus formed is gastight on its end sides and can be mounted with a snug fit on the longitudinally lateral walls (13) of a mixture distributor (12) and connected to these walls (13) in a gastight manner (Figure 3). <IMAGE>

Description

Die Erfindung betrifft zunächst ein Verfahren zur Herstellung eines die Brennerplatte bildenden, mit Längsseitenwänden eine längliche Brennerkammer begrenzenden und in einer mittigen Mulde eine Lagerung für ein längsverlaufendes Kühlrohr aufweisenden Oberteiles eines Gasbrenners aus einem Blechzuschnitt.The invention relates first of all to a method for producing a burner plate that forms the burner plate, delimits an elongated burner chamber with longitudinal side walls and, in a central trough, a bearing for an upper part of a gas burner that has a longitudinal cooling tube from a sheet metal blank.

Aufgabe der Erfindung ist es, ein Verfahren zu schaffen, das es ermöglicht, dieses Oberteil des Brenners mit allen seinen für die Gestaltung der Brennerkammer wesentlichen Bestandteilen in wenigen, problemlos vollziehbaren Arbeitsgängen aus einem einzigen Blechzuschnitt herzustellen.The object of the invention is to provide a method which makes it possible to produce this upper part of the burner with all of its essential components for the design of the burner chamber in a few, easily executable work steps from a single sheet metal blank.

Erfindungsgemäß ist zur Erreichung dieses Zieles vorgesehen, daß zuerst an den beiden Stirnseiten dieses eine der Länge des Brenners entsprechende Länge aufweisenden Blechzuschnittes zur Bildung der Stirnwände der Brennerkammer in Längsrichtung des Blechzuschnittes ausragende, beiderseits der Breitenmitte angeordnete Fortsätze abgekantet, sodann in der Breitenmitte des Blechzuschnittes eine zur Lagerung eines Kühlrohres bestimmte Mulde durch Ziehen geformt, sodann die beiden beidseits dieser Mulde befindlichen, zur Bildung der Brennerplatte vorgesehenen inneren Längsbereiche in bezug zu äußeren, zur Bildung der Längsseitenwände der Brennerkammer bestimmten Längsbereichen in eine Schrägstellung abgekantet und schließlich diese beiden äußeren Längsbereiche in eine zueinander parallele Lage verformt und auf einen der Breite der Brennerkammer entsprechenden Abstand gegeneinander gedrückt werden.According to the invention, in order to achieve this goal it is provided that this one of the two end faces Length of the burner corresponding length of sheet metal blank to form the end walls of the burner chamber protruding projections arranged in the longitudinal direction of the sheet metal blank, arranged on both sides of the width center, then in the width center of the sheet metal blank a depression intended for storage of a cooling tube is formed by pulling, then the two located on both sides of this depression , to form the burner plate provided inner longitudinal areas with respect to outer, to form the longitudinal side walls of the burner chamber defined longitudinal areas in an inclined position and finally these two outer longitudinal areas are deformed into a parallel position and pressed against each other at a distance corresponding to the width of the burner chamber.

Mit diesen Verfahrensschritten läßt sich auf vergleichsweise einfache und kostengünstige Weise ein Brenneroberteil anfertigen, das sich durch eine hohe und einfach realisierbare Gasdichtheit der Brennerkammer und durch eine technisch vorteilhafte Gestaltung des Flammenbereiches auszeichnet.With these process steps, a burner upper part can be produced in a comparatively simple and cost-effective manner, which is characterized by a high and easily achievable gas tightness of the burner chamber and by a technically advantageous design of the flame area.

Zur Bildung seitlicher Abschirmwände des Flammenbereiches des Brenners, die auch zu einer günstigen Führung der Sekundärluft beitragen, können nach einer bevorzugten Ausführungsform des Verfahrens äußere Randzonen der beiden inneren Längsbereiche gemeinsam mit benachbarten inneren Randzonen der beiden äußeren Längsbereiche in eine einwärts gegen die Breitenmitte des Brenners weisende Schräglage gebogen werden.To form lateral shielding walls of the flame region of the burner, which also contribute to a favorable guidance of the secondary air, according to a preferred embodiment of the method, outer edge zones of the two inner longitudinal regions, together with adjacent inner edge zones of the two outer longitudinal regions, can point inward toward the center of the width of the burner Be inclined.

Die Herstellung solcher doppellagiger Abschirmwände wird dann besonders vereinfacht, wenn die beiden äußeren Randzonen der beiden inneren Längsbereiche zunächst gleichzeitig mit dem Abkanten der beiden äußeren Längsbereiche nur vorgebogen und sodann mit diesen äußeren Längsbereichen gemeinsam hochgestellt werden.The production of such double-layered shielding walls is particularly simplified if the two outer edge zones of the two inner longitudinal regions are initially only pre-bent simultaneously with the folding of the two outer longitudinal regions and then raised together with these outer longitudinal regions.

Zur Herstellung der endgültigen Soll-Lage dieser Abschirmwände brauchen dann nur die inneren Randzonen der beiden äußeren Längsbereiche gemeinsam mit dem Parallelstellen dieser äußeren Längsbereiche in eine Schräglage abgekantet und mit den äußeren Randzonen der inneren Längsbereiche gemeinsam in dieser Soll-Schräglage einwärts gedrückt zu werden.To produce the final target position of these shielding walls, only the inner edge zones of the two outer longitudinal regions need to be folded together with the parallel positioning of these outer longitudinal regions into an inclined position and pressed inwards together with the outer edge zones of the inner longitudinal regions in this desired inclined position.

Zum gasdichten Abschluß der Stirnseiten der Brennerkammer und zur Versteifung der Stirnwände empfiehlt es sich, Teile eines an beiden Stirnseiten, in der Breitenmitte des Blechzuschnittes ausgebildeten Vorsprunges zu einem Kragen der zur Lagerung des Kühlrohres dienenden Mulde der Brennerplatte zu verformen.For the gas-tight closure of the end faces of the burner chamber and for stiffening the end walls, it is advisable to deform parts of a projection formed on both end faces, in the middle of the width of the sheet metal blank, into a collar of the trough of the burner plate which serves to support the cooling tube.

Auch die stirnseitigen Ränder der beiden inneren Längsbereiche können zu diesem Zweck zu Bördeln verformt werden. Dieser Verfahrensschritt ist sehr vorteilhaft mit dem Gegeneinanderdrücken der beiden Längsseitenwände des Brenneroberteiles auf deren Soll-Distanz, also mit dem letzten Verfahrensschritt, koppelbar.The front edges of the two inner longitudinal areas can also be deformed into flanges for this purpose. This process step can be coupled very advantageously with the pressing of the two longitudinal side walls of the upper burner part against one another at their desired distance, that is to say with the last process step.

Schließlich erstreckt sich die Erfindung auch auf einen nach dem erfindungsgemäßen Verfahren hergestellten Oberteil eines Gasbrenners.Finally, the invention also extends to an upper part of a gas burner produced by the method according to the invention.

Ein solches aus einem einzigen Blechzuschnitt geformtes Oberteil ist mit Paßsitz auf die oberen Ränder der Wandungen eines Gas-Luft-Gemisch-Verteilers aufgesetzt, wobei die beiden äußeren Längsbereiche die Seitenwandungen des Oberteiles bilden und gemeinsam eine Brennerkammer begrenzen, die oben durch eine aus den beiden inneren Längsbereichen gebildete, mit einer längsverlaufenden Mulde für ein Kühlrohr und mit von dieser Mulde beidseits schräg aufwärts verlaufenden, von Gemischaustrittsöffnungen durchsetzten Seitenbereichen profilierte Brennerplatte abgeschlossen ist.Such an upper part formed from a single sheet metal blank is fitted onto the upper edges of the walls of a gas-air mixture distributor, the two outer longitudinal regions forming the side walls of the upper part and together delimiting a burner chamber, which is at the top by one of the two inner Longitudinal areas formed, with a longitudinal trough for a cooling tube and with this trough extending obliquely upwards on both sides and through which mixture outlet openings are profiled side plates.

Das erfindungsgemäße Verfahren ermöglicht eine gasdichte Verbindung der von den stirnseitig beidseits angeordneten Fortsätzen des Blechzuschnittes gebildeten Stirnwandteile mit den stirnseitigen Rändern der die Brennerplatte bildenden inneren Längsbereiche des Zuschnittes.The method according to the invention enables a gas-tight connection of the end wall parts formed by the extensions of the sheet metal blank arranged on both ends with the front edges of the inner longitudinal regions of the blank forming the burner plate.

Anhand der Zeichnungen ist ein Ausführungsbeispiel des erfindungsgemäßen Verfahrens veranschaulicht und nachstehend erläutert.An exemplary embodiment of the method according to the invention is illustrated with reference to the drawings and explained below.

Im einzelnen zeigen die

  • Figuren 1 bis 6 den Ablauf des Verfahrens in Querschnitten durch den schrittweise verformten Blechzuschnitt und die
  • Figuren 7 bis 20 diese Verfahrensschritte in jeweils einem schematischen Querschnitt und einer Draufsicht.
In detail show the
  • Figures 1 to 6 the sequence of the method in cross-sections through the gradually deformed sheet metal blank and
  • Figures 7 to 20 each of these method steps in a schematic cross section and a plan view.

Die Figuren 7 und 8 zeigen zunächst den noch ebenen, unverformten Blechzuschnitt 1, an dessen Stirnseiten je zwei seitliche Fortsätze 2 und je ein mittiger Vorsprung 3 ausragen.FIGS. 7 and 8 first show the still flat, undeformed sheet metal blank 1, on the end faces of which two lateral extensions 2 and a central projection 3 each protrude.

Die Fortsätze 2 dienen später zur Bildung von die Stirnseiten der Brennerkammer begrenzenden Stirnwandungen, die Vorsprünge 3 sowie die aus Figur 1 ersichtlichen Noppen 4 dienen der Halterung eines Kühlrohres 5 in einer längsverlaufenden Mulde 7 (Figur 6).The extensions 2 later serve to form end walls delimiting the end faces of the burner chamber, the projections 3 and the knobs 4 shown in FIG. 1 serve to hold a cooling tube 5 in a longitudinal trough 7 (FIG. 6).

Im ersten Verfahrensschritt werden gemäß der Figuren 1, 9 und 10 die Fortsätze 2 etwa senkrecht zur Ebene des Blechzuschnittes 1 abgekantet, und gleichzeitig werden die beiden Längsränder 6 des Blechzuschnittes 1 in eine zu dessen Ebene schräge Stellung abgebogen.In the first process step, the extensions 2 are bent approximately perpendicular to the plane of the sheet metal blank 1, as shown in FIGS. 1, 9 and 10, and at the same time the two longitudinal edges 6 of the sheet metal blank 1 are bent into a position inclined to its plane.

Im zweiten Verfahrensschritt wird gemäß der Figuren 2, 11 und 12 die Mulde 7 für das Kühlrohr 5 durch Ziehen geformt, wobei im selben Verfahrensschritt auch die später als Brennerplatte dienenden und mit den Gemischaustrittsöffnungen auszustattenden, sich beidseits der Mulde 7 erstreckenden inneren Längsbereiche 8 in eine Schräglage in bezug zu den äußeren Längsbereichen 9 verformt werden.In the second process step, according to FIGS. 2, 11 and 12, the depression 7 for the cooling tube 5 is formed by pulling, in the same process step also the inner longitudinal regions 8, which later serve as the burner plate and are to be provided with the mixture outlet openings, and which extend on both sides of the depression 7 Oblique position with respect to the outer longitudinal regions 9 are deformed.

Der dritte Verfahrensschritt umfaßt gemäß der Figuren 3, 13 und 14 ein Vorbiegen jener Randzonen 10 der inneren Längsbereiche 8, die unmittelbar an die äußeren Längsbereiche 9 anschließen. Dabei werden diese Randzonen 10 in bezug zu den Randzonen 11 der beiden äußeren Längsbereiche 9 in eine zunächst zu diesen Längsbereichen 9 senkrechte Stellung vorgebogen.According to FIGS. 3, 13 and 14, the third method step involves pre-bending those edge zones 10 of the inner longitudinal regions 8 which directly adjoin the outer longitudinal regions 9. These edge zones 10 are pre-bent with respect to the edge zones 11 of the two outer longitudinal regions 9 into a position which is initially perpendicular to these longitudinal regions 9.

Der vierte Verfahrensschritt umfaßt gemäß der Figuren 4, 15 und 16 ein Hochstellen der beiden äußeren Längsbereiche 9, die dadurch in eine gemeinsame waagerechte Ebene zu liegen kommen, wobei sich der stumpfe Winkel zwischen den inneren Längsbereichen 8 und deren Randzonen 10 verringert.According to FIGS. 4, 15 and 16, the fourth method step comprises raising the two outer longitudinal regions 9, which thereby come to lie in a common horizontal plane, the obtuse angle between the inner longitudinal regions 8 and their edge zones 10 being reduced.

Im fünften Verfahrensschritt werden gemäß der Figuren 5, 17 und 18 die beiden äußeren Längsbereiche 9 in eine zueinander parallele Lage gebogen, weisen jedoch noch nicht ihre Soll-Distanz, sondern eine zu große Distanz auf. Gleichzeitig mit diesem Abbiegen der äußeren Längsbereiche 9 werden die Randzonen 11 dieser Längsbereiche 9 abgekantet, und zwar in einer Breite, die der Breite der Randzonen 10 der beiden inneren Längsbereiche 8 entspricht.In the fifth method step, according to FIGS. 5, 17 and 18, the two outer longitudinal regions 9 are bent into a position parallel to one another, but do not yet have their desired distance, but an excessively large distance. Simultaneously with this bending of the outer longitudinal regions 9, the edge zones 11 of these longitudinal regions 9 are folded, to be precise in a width which corresponds to the width of the edge zones 10 of the two inner longitudinal regions 8.

In der endgültigen Form nach den Figuren 6, 19 und 20 werden die beiden äußeren Längsbereiche 9 als Längsseitenwände der fertigen Brennerkammer 14 auf die oberen Ränder der Längsseitenwandungen 13 einer Gemischverteilerkammer 12 aufgesetzt und auf ihren Soll-Abstand, der der Breite der Brennerkammer 14 entspricht, gegeneinandergedrückt, wobei die Fortsätze 2 gemeinsam jeweils eine Stirnwand der Brennerkammer 14 bilden und diese Brennerkammer 14 gasdicht abschließen.In the final form according to FIGS. 6, 19 and 20, the two outer longitudinal regions 9, as the longitudinal side walls of the finished burner chamber 14, are placed on the upper edges of the longitudinal side walls 13 of a mixture distribution chamber 12 and on their desired distance, which corresponds to the width of the burner chamber 14, pressed against each other, the extensions 2 each forming an end wall of the burner chamber 14 and sealing this burner chamber 14 gas-tight.

Die im ersten Verfahrensschritt abgebogenen Längsränder 6 der äußeren Längsbereiche 9, also nunmehr der Längsseitenwände der Brennerkammer 14, erleichtern das paßgenaue Aufsetzen des Oberteiles auf die Längsseitenwandungen 13 der Gemischverteilerkammer 12.The longitudinal edges 6 of the outer longitudinal regions 9, which are now the longitudinal side walls of the burner chamber 14, bent in the first method step, facilitate the fitting of the upper part onto the longitudinal side walls 13 of the mixture distribution chamber 12.

Der Stirnwand der Mulde 7 für das Kühlrohr 5 erhält dabei einen aus dem Vorsprung 3 des Blechzuschnittes 1 gebildeten, der Abdichtung dienenden Kragen 15 und die beiden inneren Längsbereiche 8 mit den Gemischaustrittsöffnungen erhalten je einen gleichfalls der Abdichtung der Stirnwände der Brennerkammer 14 dienenden, gemeinsam mit den stirnseitigen Fortsätzen 2 des Blechzuschnittes 1 dichtenden Bördel 16.The end wall of the trough 7 for the cooling tube 5 receives a collar 15 formed from the projection 3 of the sheet metal blank 1, which serves as a seal, and the two inner longitudinal regions 8 with the mixture outlet openings each receive a joint which also serves to seal the end walls of the burner chamber 14 the end extensions 2 of the sheet metal blank 1 sealing flange 16.

Die Randzonen 10 und 11 der inneren beziehungsweise äußeren Längsbereiche 8 und 9 werden gemeinsam einwärtsgebogen und bilden satt aneinanderliegend eine solide beidseitige Abschirmung für den Flammenbereich des Brenners sowie eine Sekundärluftführung.The edge zones 10 and 11 of the inner and outer longitudinal regions 8 and 9 are jointly bent inward and form a solid, mutually adjacent shield for the flame region of the burner and a secondary air duct.

Claims (9)

  1. A process of manufacturing a top part of a gas burner from a sheet metal blank, characterized in that said sheet metal blank (1), which has a length corresponding to the length of the burner, is initially flanged at its two ends to form extensions (2), which protrude in the longitudinal direction of the sheet metal blank and are disposed on opposite sides of the width centre and serve to form the end walls of the burner chamber (14), a trough (7) for movably mounting a cooling tube (5) is then formed by drawing at the width centre of the sheet metal blank (1), the two inner longitudinal portions (8) which are disposed on both sides of said trough (7) and serve to constitute the burner plate are folded to an inclined position relative to outer longitudinal portions (9) serving to constitute the longitudinal side walls of the burner chamber (14), and said two outer longitudinal portions (9) are finally shaped to extend parallel to each other and are forced towards each other to be spaced a distance apart which corresponds to the width of the burner chamber (14) (Figures 1 to 6 and 7 to 20).
  2. A process according to claim 1, characterized in that outer marginal zones (10) of the two inner longitudinal portions (8) are bent jointly with adjacent inner marginal zones (11) of the two outer longitudinal portions (9) to assume an inclined position, in which they face inwardly towards the width centre (Figures 3 to 6).
  3. A process according to claim 2, characterized in that the two outer marginal zones (10) of the two inner longitudinal portions (8) are initially merely prebent during the folding of the two outer longitudinal portions (9) and are subsequently raised jointly with said outer longitudinal portions (9) (Figures 3, 4).
  4. A process according to claim 2 or 3, characterized in that the inner marginal zones (11) of the two outer longitudinal portions (9) are jointly folded to an inclined position while said two outer longitudinal portions (9) are moved to a parallel position and the inner marginal portions (11) of the two outer longitudinal portions (9) and the outer marginal portions (10) of the inner longitudinal portions (8) are jointly forced inwardly in that inclination (Figures 5, 6).
  5. A process according to any of claims 1 to 4, characterized in that portions of a projection (3) provided at both ends of the sheet metal blank (1) at its width center are shaped to form a flange (15) at the trough (7) for movably mounting the cooling tube (5) (Figures 10, 20).
  6. A process according to any of claims 1 to 5, characterized in that the end edges of the two inner longitudinal portions (8) are shaped to form beads (16) (Figures 19, 20).
  7. A gas burner comprising a top part manufactured by the process according to any of claims 1 to 6, characterized in that said top part made from a single sheet metal blank (1) is placed as a close fit on the top edges of the e walls (13) of a distributor (12) for a gas-air-mixture so that the two outer longitudinal portions (9) constitute the side walls and jointly define a burner chamber (14), which is closed at its top by a burner plate, which is constituted by the two inner longitudinal portions (18) and is profiled to have a longitudinally extending trough (7) for a cooling tube (5) and to have lateral portions, which are upwardly inclined from said trough (7) and formed with mixture exit openings (Figure 6).
  8. A gas burner according to claim 7, characterized in that a gastight joint is provided between end wall portions constituted by the extensions (2) provided at the ends of the sheet metal blank (1) on both sides and the end edges of the inner longitudinal portions (8) of the blank, which end longitudinal portions constitute the burner plate (Figure 19).
  9. A gas burner according to claim 7 or 8, characterized in that the two longitudinal edges (6) of the top part are bent outwardly to facilitate the fitting on the longitudinal sides of the walls (13) of the distributor (12) for the gas-air mixture.
EP19890102223 1988-02-08 1989-02-08 Method of producing a gas burner head from a blank of sheet metal Expired - Lifetime EP0328095B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0024788A AT389248B (en) 1988-02-08 1988-02-08 METHOD FOR PRODUCING A TOP OF A GAS BURNER AND GAS BURNER TOP PRODUCED BY THE METHOD
AT247/88 1988-02-08

Publications (3)

Publication Number Publication Date
EP0328095A2 EP0328095A2 (en) 1989-08-16
EP0328095A3 EP0328095A3 (en) 1990-05-16
EP0328095B1 true EP0328095B1 (en) 1993-06-16

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EP19890102223 Expired - Lifetime EP0328095B1 (en) 1988-02-08 1989-02-08 Method of producing a gas burner head from a blank of sheet metal

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AT (2) AT389248B (en)
DE (2) DE58904669D1 (en)

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Publication number Priority date Publication date Assignee Title
ES2044740B1 (en) * 1991-05-13 1996-11-16 Fagor S Coop IMPROVEMENTS IN ATMOSPHERIC BURNERS FOR GAS AND / OR SIMILAR HEATERS.
AT397566B (en) * 1992-05-11 1994-05-25 Vaillant Gmbh MIXING CHAMBER ARRANGEMENT FOR BURNERS AND METHOD FOR PRODUCING THE SAME

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312267A (en) * 1964-01-13 1967-04-04 Johnson Corp Gas burner
US3499308A (en) * 1967-03-22 1970-03-10 Tepfer & Sons Inc S Molding metal
FI49248C (en) * 1972-07-03 1975-05-12 Valmet Oy Folding procedure for sheet metal channels.
DE2434841C2 (en) * 1974-07-19 1976-09-09 Joh. Vaillant Kg, 5630 Remscheid METHOD OF MANUFACTURING A BURNER CHAMBER
DE8604050U1 (en) * 1986-02-12 1986-06-26 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Premix gas burner
AT393015B (en) * 1987-09-21 1991-07-25 Vaillant Gmbh GAS BURNER

Also Published As

Publication number Publication date
EP0328095A3 (en) 1990-05-16
ATE90786T1 (en) 1993-07-15
EP0328095A2 (en) 1989-08-16
DE3903689A1 (en) 1989-08-17
DE58904669D1 (en) 1993-07-22
ATA24788A (en) 1989-04-15
AT389248B (en) 1989-11-10

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